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Vulnerability record · CVE-2017-18014 · published 12 January 2018

CVE-2017-18014: Sophos sfos cross-site scripting vulnerability

Sophos · Sfos

An NC-25986 issue was discovered in the Logging subsystem of Sophos XG Firewall with SFOS before 17.0.3 MR3. An unauthenticated user can trigger a persistent XSS vulnerability found in the WAF log page (Control Center -> Log Viewer -> in the filter option "Web Server Protection") in the webadmin interface, and execute any action available to the webadmin of the firewall (e.g., creating a new user, enabling SSH, or adding an SSH authorized key). The WAF log page will execute the "User-Agent" parameter in the HTTP POST request.

6.1 CVSS 3.0 Medium EPSS 2.3% · top 17.3% CWE-79 · Cross-site scripting
6.1CVSS 3.0 base score, v2 4.3
2.3%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

An NC-25986 issue was discovered in the Logging subsystem of Sophos XG Firewall with SFOS before 17.0.3 MR3. An unauthenticated user can trigger a persistent XSS vulnerability found in the WAF log page (Control Center -> Log Viewer -> in the filter option "Web Server Protection") in the webadmin interface, and execute any action available to the webadmin of the firewall (e.g., creating a new user, enabling SSH, or adding an SSH authorized key). The WAF log page will execute the "User-Agent" parameter in the HTTP POST request.

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://seclists.org/fulldisclosure/2018/Jan/24 Mailing ListThird Party Advisory
https://blogs.securiteam.com/index.php/archives/3612 ExploitThird Party Advisory
https://community.sophos.com/kb/en-us/128024 Vendor Advisory
https://community.sophos.com/products/xg-firewall/b/xg-blog/posts/sfos-17-0-3-mr3-released Vendor Advisory
http://seclists.org/fulldisclosure/2018/Jan/24 Mailing ListThird Party Advisory
https://blogs.securiteam.com/index.php/archives/3612 ExploitThird Party Advisory
https://community.sophos.com/kb/en-us/128024 Vendor Advisory
https://community.sophos.com/products/xg-firewall/b/xg-blog/posts/sfos-17-0-3-mr3-released Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2022-1040Sophos Firewall auth bypass in User Portal and Webadmin leads to RCESophos Firewall v18.5 MR3 and older contain an authentication bypass in the User Portal and Webadmin that lets a remote attacker execute code. The fl…KEVEPSS 100%analysed9.8CVE-2020-12271Sophos XG Firewall SFOS SQL Injection Leading to RCESophos XG Firewall devices running SFOS 17.0, 17.1, 17.5, and 18.0 before 2020-04-25 contain a SQL injection flaw in the administration (HTTPS) servi…KEVEPSS 42%analysed9.8CVE-2020-11503Sophos sfos out-of-bounds write vulnerabilityA heap-based buffer overflow in the awarrensmtp component of Sophos XG Firewall v17.5 MR11 and older potentially allows an attacker to run arbitrary …EPSS 1.4%8.8CVE-2018-16117Sophos sfos os command injection vulnerabilityA shell escape vulnerability in /webconsole/Controller in Admin Portal of Sophos XG firewall 17.0.8 MR-8 allow remote authenticated attackers to exec…EPSS 44%8.8CVE-2018-16116Sophos sfos sql injection vulnerabilitySQL injection vulnerability in AccountStatus.jsp in Admin Portal of Sophos XG firewall 17.0.8 MR-8 allow remote authenticated attackers to execute ar…EPSS 1.9%8.1CVE-2018-16118Sophos sfos os command injection vulnerabilityA shell escape vulnerability in /webconsole/APIController in the API Configuration component of Sophos XG firewall 17.0.8 MR-8 allows remote attacker…EPSS 3.7%5.3CVE-2022-0331Sophos sfos vulnerabilityAn information disclosure vulnerability in Webadmin allows an unauthenticated remote attacker to read the device serial number in Sophos Firewall ver…EPSS 1.5%6.1CVE-2026-42897Microsoft Exchange Server XSS enables spoofingMicrosoft Exchange Server and Exchange Server Subscription Edition fail to neutralize input during web page generation, a cross-site scripting flaw (…KEVEPSS 0.52%analysed

Source: NIST National Vulnerability Database (record CVE-2017-18014), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.